Det-TESLA: Integrated Multicast Authentication and Flow Scheduling for Deterministic Networking
Ensuring security without compromising low-latency determinism is critical for modern time-sensitive (TS) applications. However, existing authentication mechanisms like Timed Efficient Stream Loss-Tolerant Authentication (TESLA) suitable for local-area real-time networks lack scalability for wide-area environments. We propose Det-TESLA, which integrates deterministic IP (DIP) networking with the TESLA protocol to ensure stable key disclosure latency. By decoupling multicast TS flows from key distribution (KD) flows, the framework provides superior scheduling flexibility for complex wide-area networks. We further develop a joint TS-KD scheduling model and an efficient online algorithm based on combinatorial auctions. Simulations reveal that Det-TESLA supports 2.9 times more low-latency flows than standard TESLA. Furthermore, our algorithm achieves an 11% performance improvement with only 20% of the execution time required by baseline algorithms.